Desert warfare
[citation needed] The barrenness of the desert makes the capture of key cities essential to ensure the ability to maintain control over important resources, primarily clean water, and being able to keep a military well supplied.As such, that makes sieges in conventional warfare more frequent, as the defender often prepares entrenched positions to protect the cities that supply them.[1] Militaries often make use of cavalry to cross the large expanses of a harsh desert without increasing the exertion of the soldiers, who are already at a higher risk of dehydration because of the high temperatures during the day.[citation needed] In the context of guerilla warfare, the wide expanses of deserts can make it more difficult for large forces to defend their supply lines.[2] In desert warfare, an individual's body temperature can reach unusual highs causing fever-like weakness and dehydration.